The way the game counts a sim's Woohoo memories is flawed. The game has wants such as "Woohoo with 10 Different Sims" and so on, but the game does not even check the subject sim when counting these memories. It simply counts all the Woohoo memories a sim has, despite the fact that a sim can woohoo with the same sim in different types of woohoo, such as Public Woohoo or NPC Woohoo. This means that you can easily achieve many of the Woohoo wants without actually woohooing with the required number of sims, making the Woohoo wants easier to achieve than Make Out wants, which are counted properly, because there is only one kind of Make Out memory.

This simple mod fixes this problem. Now, if the sim has woohooed with the same sim multiple times in different types of woohoo, the game will consider that sim as having woohooed with only one sim. You actually need to woohoo with the required number of sims if you want to achieve these wants now.